What is difference between 'assign' and 'retain' keyword?
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What are the functions of managed object context?
Explain the options and bars available in xcode 4.x workspace window in iOS operating system
Can viewdidload be called multiple times?
What is categories in iOS?
Who calls the dealloc strategy? Would we be able to implement dealloc in arc? In the event that indeed, what is the need to do that?
Explain stack and heap?
What are the viewcontroller lifecycle in ios?
What three types of navigation styles are used in ios?
What is core data stack?
Difference between coredata & sqlite?
What is delegate?
What is messaging? How does the runtime handle message passing?